Q34 A manufacturer knows that their items have a normally distributed lifespan, with a mean of 3.9 years, and standard d

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answerhappygod
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Q34 A manufacturer knows that their items have a normally distributed lifespan, with a mean of 3.9 years, and standard d

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Q34
A manufacturer knows that their items have a normally
distributed lifespan, with a mean of 3.9 years, and standard
deviation of 0.8 years.

If you randomly purchase one item, what is the probability it will
last longer than 6 years?
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